String clamp



FIG. 1 is a perspective view of a string clamp showing my new design;

FIG. 2 is a top view thereof;

FIG. 3 is a front view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a right side view thereof; and,

FIG. 6 is a left side view thereof.

The string clap is comprised of two separate components. 

The ornamental design for a string clamp, as shown and described. 